Patent-drafting aid

Abstract

A device for facilitating patent drafting comprises a base sheet, and a second sheet to which the drafting medium is affixed, the sheets having magnetic properties to maintain the base and second sheets in an alignable relationship with each other, the second sheet being transparent in some areas. Guidelines on the base and second sheets permit ready alignment of patent drafting requirements and to commonly used drafting angles. In one embodiment, the magnetic means are positioned to cause the sheets to maintain alignment at commonly used drafting angles.

I claim: 
     
       1. An improved device for facilitating patent drafting, comprising a base sheet and a second sheet having magnetic domains, said second sheet being transparent in at least a plurality of areas and having a surface to which a drafting medium can be affixed, said base and second sheets having guide lines and indicia for patent drafting emplaced thereon, said magnetic domains being disposed to permit alignment of said sheets at predetermined angular juxtapositions. 
     
     
       2. The device of claim 1 wherein said magnetic domains are disposed to permit alignment of said sheets at 45°, 60° and 90° angles to each other. 
     
     
       3. The device of claim 1 wherein at least one of said sheets has patent-drafting guidelines thereon. 
     
     
       4. The device of claim 1 wherein said second sheet has an arcuate top and bottom edge. 
     
     
       5. The device of claim 1 wherein said base sheet has guidelines complementary with said arcuate top and bottom edges of said second sheet.